Wrong JPEG library - ruby on rails- OS X

I keep getting this error any time i call any page that has a call that uses RMagick, but i can't figure out what library i'm missing, or what i need to install to get rid of this error. Does anyone have debugging suggestions?

    Processing SimpleCaptchaController#simple_captcha (for 127.0.0.1 at 2010-01-14 14:24:24) [GET]
  Parameter开发者_C百科s: {"image_style"=>"", "time"=>"1263500664", "simple_captcha_key"=>"13eec13214d2ce84b725d14c5877fcbe13308cf5", "distortion"=>""}
Could not dump header data for exception: not opened for reading

ArgumentError (unknown format: JPG):
  /usr/local/lib/ruby/gems/1.8/gems/fiveruns-dash-ruby-0.8.10/lib/fiveruns/dash/instrument.rb:125:in `perform_action_without_rescue'

...

After re-installing based on this cache of the bellow attempted solution

i am getting this error:

Magick::ImageMagickError (Wrong JPEG library version: library is 62, caller expects 70 `' @ jpeg.c/EmitMessage/232):

I had to:

sudo port uninstall jpeg

install image magic using this script on git:

http://github.com/masterkain/ImageMagick-sl

after i was able to install rmagick:

sudo gem install rmagick

now, no more problems.

Their site is down at the moment, but when it comes back online you should run this install script by Solomon White.

http://onrails.org/articles/2009/09/04/rmagick-from-source-on-snow-leopard